Product Description
BlueLab Waterproof PH Pen Type Meter This pen style meter is the latest in meters from Blue Lab Nz it is easy to use ,easy to calibrate and reliable .Waterproof so if you drop it in solution just fish it out,no need to go buy a new meter .Blue Lab also has calibration solution in quick one use sachets so calibration is so easy .If you are serious about hydroponics or aquaponics this is the best meter before the lab style range .
